Had a call last month from a guy who was looking for the chain to suit a Westfield Reverse Gear Box. I knew exactly what he wanted and within three days of his call he took delivery of twenty four pitch of endless chain. Apparently the Westfield part number is 1744010 and its to suit the mega range of cars.
Taking a look at the drawings for the gearbox there are a number of bearings, seals, washers which I can also supply. If you need any parts relevant to the gearbox why not give me a call. I supply SKF and INA bearings, SKF seals and Anderton equivalent circlips.
Call WMT Bearings on 01743 850618 or email firstname.lastname@example.org for your quotation.